While driving, a vehicle attempted to pass three cars at once. At the last minute, the person saw an oncoming car approaching and quickly came back to the other lane, cause the three cars to break hard quickly. I, the one putting down this complaint, am the only one who hit another vehicle. I hit that vehicle in its rear as everyone was breaking. The driver side airbag did not deploy from the impact. There were no other persons in my vehicle. At this time, there is no independent center to confirm that it should of deployed. The vehicle has only been inspected on the extent of the damage to it by my insurer. There were no light warnings of any kind that I can recall from the crash.